Device to determine the correct mounting height of an optical sight on a rifle

ABSTRACT

A fixture for establishing a mounting position of a riflescope. The fixture comprises a base configured to connect to a rifle; the base having opposed standard extending upward and defining a passage configured to receive a rifle scope; a plurality of lateral apertures defined in each standard configured to removable receive lateral supports at a plurality of different levels; a plurality of lateral supports; and a retainer connected to the base and operable to bias the riflescope against the lateral supports.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of U.S. Provisional Pat. Application Number 63/311,086, filed on Feb. 17, 2022, entitled “DEVICE TO DETERMINE THE CORRECT MOUNTING HEIGHT OF AN OPTICAL SIGHT ON A RIFLE”, which is hereby incorporated by reference in its entirety for all that is taught and disclosed therein.

FIELD OF THE INVENTION

The present invention relates to optic scope mounts.

BACKGROUND AND SUMMARY

Determining the correct height of scope mounts (Rings or unimount) is necessary for correct sight height and eye relief, it is currently a trial and error process.

This is expensive, time consuming and sometimes not practical.

The above disadvantage is addressed by a fixture for establishing a mounting position of a riflescope. The fixture comprises a base configured to connect to a rifle; the base having opposed standard extending upward and defining a passage configured to receive a rifle scope; a plurality of lateral apertures defined in each standard configured to removable receive lateral supports at a plurality of different levels; a plurality of lateral supports; and a retainer connected to the base and operable to bias the riflescope against the lateral supports.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view showing the scope the scope cradle, Outer housing, Stop pins and Cross bolts, Retaining straps.

The Dead On is comprised of:

-   Outer housing, 2 ea. -   Scope cradle, 2 ea. -   Stop pins, 2 ea. -   Cross bolts, 2ea. -   Retainer straps or bands (to be determined) 2 ea.

FIG. 2 is an isometric view with scope installed with the scope cradle at a low setting.

FIG. 3 is an isometric view with scope installed with the scope cradle at an elevated setting.

FIG. 4 is an end view with scope installed with the scope cradle at a low setting.

FIG. 5 is an end view with scope installed with the scope cradle at an elevated setting.

FIG. 6 is a side view with scope installed with the scope cradle at a low setting.

FIG. 7 is a side view with scope installed in an elevated setting.

FIG. 8 is an isometric view of the Dead On installed on a scope rail with scope installed.

FIG. 9 is a side view of the Dead On installed on a scope rail with scope installed.

DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT

The Dead On allows the user to rapidly determine proper Scope height and eye relief.

The Outer housings are slid onto the scope rail of the rifle and secured by cross bolts. The Scope cradles are placed into the outer housings and the scope is placed into the Scope cradles.

Lift the scope/Slider and insert the Stop pins. The retaining straps are adjusted to make sure the scope does not fall out during testing.

Now you can shoulder the rifle and check for correct scope mount height. The scope can be moved forward and backward for correct eye relief.

If the scope is too high or low move the stop pin up or down to determine the correct Ring/Unimount height.

Once the correct height is obtained observe the marking on the Scale on the outer housing and cross reference it with scope rings/unimounts available. 

1. A fixture for establishing a mounting position of a riflescope, the fixture comprising: a base configured to connect to a rifle; the base having opposed standard extending upward and defining a passage configured to receive a rifle scope; a plurality of lateral apertures defined in each standard configured to removable receive lateral supports at a plurality of different levels; a plurality of lateral supports; and a retainer connected to the base and operable to bias the riflescope against the lateral supports.
 2. A rifle scope mounting height assessment tool for a rifle having a mounting facility configured to receive scope support structures, the tool comprising: a frame having a mounting facility configured to removably connect to the mounting facility of the rifle; a cradle movably connected to the frame and operable to move among a plurality of different vertical positions; the cradle defining a rifle scope support passage; and a retention element operable to secure the cradle relative to the frame in a selected one of the plurality of different vertical positions.
 3. The rifle scope mounting height assessment tool of claim 2 wherein the cradle is constrained for only vertical translation movement with respect to the frame.
 4. The rifle scope mounting height assessment tool of claim 2 wherein the cradle is moved only in translation with respect to the frame.
 5. The rifle scope mounting height assessment tool of claim 2 wherein the cradle defines an upwardly open channel.
 6. The rifle scope mounting height assessment tool of claim 2 wherein the rifle scope support passage includes a lower surface portion facing upward and configured to contact a lower surface of a cylindrical scope tube.
 7. The rifle scope mounting height assessment tool of claim 2 wherein the cradle includes a centering facility configured to resist movement of a rifle scope laterally off center.
 8. The rifle scope mounting height assessment tool of claim 2 wherein the cradle includes opposed spring elements configured to laterally center the rifle scope.
 9. The rifle scope mounting height assessment tool of claim 2 wherein the frame defines a plurality of apertures, each associated with a selected vertical position.
 10. The rifle scope mounting height assessment tool of claim 9 wherein the frame has opposed sidewalls and the apertures are defined in pairs, with an aperture of each pair in one of the opposed sidewalls.
 11. The rifle scope mounting height assessment tool of claim 9 wherein the apertures are grouped into a plurality of groups, each associated with a scope tube diameter.
 12. The rifle scope mounting height assessment tool of claim 11 including indicia associated with each group associated with the scope tube diameter.
 13. The rifle scope mounting height assessment tool of claim 9 including a pin passing through a selected aperture, and supportively contacting a lower surface portion of the cradle.
 14. The rifle scope mounting height assessment tool of claim 13 wherein the pin has a length greater than a width of the cradle such that the pin contacts opposed sidewalls of the frame.
 15. The rifle scope mounting height assessment tool of claim 2 including a second retention element connected to the frame and operable to secure the cradle and a supported rifle scope to the frame.
 16. The rifle scope mounting height assessment tool of claim 2 including a second frame and cradle assembly configured to mount to the mounting facility of the rifle in a spaced-apart relation with the frame.
 17. The rifle scope mounting height assessment tool of claim 2 wherein the plurality of different vertical positions is selected from a list including positions associated with a selected limited inventory of scope support structures.
 18. The rifle scope mounting height assessment tool of claim 2 wherein the scope support structures are scope rings. 